So, we overclocked our AMD Athlon 64 FX-53 on ASUS SK8V mainboard. For cooling purposes we used Thermaltake Silent Boost K8 (A1838) cooler. To increase the overclocking efficiency, we raised the Vcore by 10% from the nominal 1.5V to 1.65V.
During overclocking we first of all increased the processor clock frequency multiplier. It turned out that our processor can work fine with the maximum multiplier equal to 13x. Setting higher multipliers led to the system’s inability too boot up. When we reached 2.6GHz obtained as 13x200MHz, the system worked absolutely fine. For even better result we decided to slightly increase the FSB frequency. However, this is where we faced the first problems pretty soon: the top frequency of the clock generator when our Athlon 64 FX-53 worked stably equaled only 202MHz.
As we see, the maximum frequency we managed to reach during Athlon 64 FX-53 overclocking was 2632MHz. in this mode the CPU successfully passed all stability tests. In other words we managed to overclock the CPU just a tiny bit beyond 2.6GHz. So, it is no secret any more that the new CG processor revision will not suit for mass products with higher core clock. Since Athlon 64 FX-53 is the top processor model on the CG core, its frequency doesn’t grow too much. So, overclockers will be able to squeeze 10% extra frequency out of the new AMD Athlon 64 FX-53 at the most without any extreme cooling involved.
Testbed and Methods
The major goal of this test session was to find out how fast the new AMD Athlon 64 FX-53 actually is compared with the competing products. Athlon 64 Fx-53 is positioned as a direct competitor to Pentium 4 Extreme Edition 3.4GHz. However, in this review we decided to compare the new AMD CPU with the top-end processor models from all Pentium 4 families: on Northwood, Gallatin and Prescott cores. I would like to point out that even though Pentium 4 with 3.4GHz core clock frequency and Prescott core is not yet available in stores, we will have it also participating in our tests. The thing is that Intel is about to start shipping these processors in the next few days and we were lucky to get our hands on one of these pieces. Also we will include the results for the outdating Athlon 64 FX-51 CPU and the top model of the Athlon 64 family with 3400+ rating.
As a result, our testbeds got configured in the following way:
- AMD Athlon 64 FX-53 (2.4GHz);
- AMD Athlon 64 FX-51 (2.2GHz);
- AMD Athlon 64 3400+ (2.2GHz);
- Pentium 4 Extreme Edition 3.4GHz.
- Intel Pentium 4 3.4E GHz (Prescott);
- Intel Pentium 4 3.4GHz (Northwood);
- ASUS P4C800-E Deluxe (Socket 478, i875P);
- ASUS SK8V (Socket 940, VIA K8T800);
- ABIT KV8-MAX3 (Socket 754, VIA K8T800);
- 1024MB DDR400 SDRAM (Corsair CMX512-3200LLPRO, 2 x 512MB, 2-3-2-6);
- 1024MB Registered DDR400 SDRAM (Mushkin High Performance ECC Registered 2 x 512MB, 2-3-2-6).
- Graphics card: ASUS RADEON 9800XT (Catalyst 4.10).
- HDD: 2 x Western Digital Raptor WD360GD in RAID 0 array.
- In all other cases the memory (registered and unbuffered) worked in the same mode with timings set to 2-3-2-6;
- The tests were run in Windows XP Professional SP1 with installed DirectX 9.0b